<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20">
                <!-- 添加搜索区和功能区 -->
                <el-col :span="8">
                    <el-input v-model="queryInfo.query" clearable placeholder="请输入内容" class="input-with-select" @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" type="primary" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区 -->
            <el-table :data="userList" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <!-- 作用域插槽 -->
                    <template slot-scope="scope">
                        <!-- {{ scope.row }} -->
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- {{ scope.row }} -->
                        <!-- 修改按钮 -->
                        <el-tooltip  effect="dark" content="修改" placement="top" :enterable="false">
                            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        </el-tooltip>
                        <!-- 删除按钮 -->
                        <el-tooltip  effect="dark" content="删除" placement="top" :enterable="false">
                            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        </el-tooltip>
                        <!-- 分配角色按钮 -->
                        <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 3, 4]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>
        <!-- 添加用户对话框 -->
        <el-dialog
          title="添加用户"
          :visible.sync="addDialogVisible"
          width="50%"
          @close="addDialogClosed">
          <!-- 内容主题区 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
              <el-form-item label="用户名" prop="username">
              <el-input v-model="addForm.username"></el-input>
              </el-form-item>
              <el-form-item label="密码" prop="password">
              <el-input v-model="addForm.password"></el-input>
              </el-form-item>
              <el-form-item label="邮箱" prop="email">
              <el-input v-model="addForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机" prop="mobile">
              <el-input v-model="addForm.mobile"></el-input>
              </el-form-item>
            </el-form>
            <!-- 底部区 -->
            <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户对话框 -->
        <el-dialog
          title="修改用户"
          :visible.sync="editDialogVisible"
          width="50%"
          @close="editClosed">
          <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
              <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机号" prop="mobile">
              <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
          </span>
        </el-dialog>
        <!-- 分配权限对话框 -->
        <el-dialog
          title="分配角色"
          :visible.sync="setRoleDialogVisible"
          width="50%"
          @close="setRoleDialogClosed">
          <div>
            <p>当前的用户：{{ userInfo.username }}</p>
            <p>当前的角色：{{ userInfo.role_name }}</p>
            <p>分配新角色：
              <el-select v-model="selectedRoleId" placeholder="请选择">
                <el-option
                v-for="item in roleList"
                :key ="item.id"
                :label="item.roleName"
                :value="item.id">
                </el-option>
              </el-select>
            </p>
          </div>
          <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="setRoleInfo">确 定</el-button>
          </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^[a-zA-Z0-9]+([-_.][a-zA-Z0-9]+)*@[a-zA-Z0-9]+([-_.][a-zA-Z0-9]+)*\.[a-z]{2,}$/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1(3[0-9]|4[5,7]|5[0,1,2,3,5,6,7,8,9]|6[2,5,6,7]|7[0,1,7,8]|8[0-9]|9[1,8,9])\d{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入正确的手机号码'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userList: [],
      // 需要被分配角色的用户信息
      userInfo: {},
      // 角色列表
      roleList: [],
      // 已选中的角色id
      selectedRoleId: '',
      total: 0,
      // 控制对话框的显示与隐藏
      addDialogVisible: false,
      editDialogVisible: false,
      setRoleDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 查询到的用户信息
      editForm: {},
      // 添加表单的验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', tigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', tigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', tigger: 'blur' },
          { min: 6, max: 15, message: '密码的长度在6~15个字符之间', tigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      },
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户数据失败!')
      }
      this.userList = res.data.users
      console.log(this.userList)
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange (newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态的改变
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      console.log(res)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      console.log(this)
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        // 可以发起添加用户的网路请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 修改用户
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改对话框重置
    editClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          return this.$message.error('更新失败！')
        }
        this.editDialogVisible = false
        this.getUserList()
        return this.$message.success('更新成功！')
      })
    },
    // 删除用户
    async removeUserById (id) {
      // 弹框
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => {
        return err
      })
      // 如果用户确认删除，则返回的字符串为confirm
      // 如果用户取消删除，则返回的字符串为cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击确定按钮，分配角色
    async setRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框关闭
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = []
    }
  }
}
</script>

<style lang="less" scoped>

</style>
